Unrated severityNVD Advisory· Published Jul 2, 2021· Updated Aug 4, 2024
CVE-2021-35209
CVE-2021-35209
Description
An issue was discovered in ProxyServlet.java in the /proxy servlet in Zimbra Collaboration Suite 8.8 before 8.8.15 Patch 23 and 9.x before 9.0.0 Patch 16. The value of the X-Host header overwrites the value of the Host header in proxied requests. The value of X-Host header is not checked against the whitelist of hosts Zimbra is allowed to proxy to (the zimbraProxyAllowedDomains setting).
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Affected products
2- Zimbra/Zimbra Collaboration Suitedescription
- Range: 8.8.x <8.8.15 Patch 23, 9.x <9.0.0 Patch 16
Patches
Vulnerability mechanics
References
5- blog.sonarsource.com/zimbra-webmail-compromise-via-emailmitrex_refsource_MISC
- wiki.zimbra.com/wiki/Security_Centermitrex_refsource_MISC
- wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P23mitrex_refsource_MISC
- wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P16mitrex_refsource_MISC
- wiki.zimbra.com/wiki/Zimbra_Security_Advisoriesmitrex_refsource_MISC
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